Improvement in spinning-machines



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IMPROVEMENT IN SPINNING-MACHINES. i

Specification forming part of Letters PatentNo. 5S, 101, dated September 1S, 1866.

To all whom it mm1 concern:

Be it known that I, GHARLEs B. HOARD, of Vatertown, in the county of J eii'erson and State ot' New York, have invented a new and useful Improvement in Spinning Fibrous Materials, of which the following is a full, clear, and exact description, reference being had to y the accompanying drawings, which malte part of this specification, and in which- Figure l represents a view in elevation of ment applied to a tube instead of a spindle.

In the continuous spinning of wool or other fibrous materials requiring to be twisted when being drawn previous to the date of my invention, great difficulty has been encountered from the fact that the twist imparted to the roving between the feed-rolls and the twisting mechanism does not continue beyond the eye of the twisting mechanism, and the roving is consequently apt to be drawn nnevenly, and often broken apart between the twisting mechanism and draw-rolls.

Numerous attempts have been made to obviate this difficulty' by impart-in g a revolving motion to the draw-rolls across their axes, thus causing them to operate both as twisting and drawing rolls. Edmund Victorys patent is an instance. This plan, while practically successful, involves too complex mechanism `for economical working, and is too liable to get out of order.

Y Now, it is the object of my invention to obviate the objections of both the abovenamed plans; and to this end my improvement consists in the employment between the feed and draw rolls of a twisting mechanism so coustructed as to present or deliver the roving properly twisted for drawing so close to the bite of the draw-rolls as to cause them to seize hold of and draw the twisted roving evenly from the delivery of the feeding-rolls to the draw-rolls, and deliver the` same properly drawn to the mechanism which imparts its final twist, the arrangement, at the same time, being such as to permit the roving, when broken back ofthe draw-rolls, to be eonveniently pieced up,7 or put into proper working position.

In the accompanying drawings, which exemplify one lnode of carrying out the objects of my invention, A B C represent feed-rolls of the ordinary construction, to he arranged and driven in any convenient way, and they may be so arranged that their distance from the draw-rolls D. E may be varied at pleasure. The twisting mechanism consists, in this instance, of a pulley, F,mounted on a hollow arbor, f, turning in suitable bearings. A spindle, G, is inserted into and revolves with this arbor, and carries on the end next the drawrolls a central eye, g, through which the roving passes. A notch or groove, i, is cut in one side of the spindle for the passage ofthe roving. This groove is enlarged and deepened at the back, as shown in Fig. 3, and may even be cut entirely through the spindle, as shown in Fig. 4.

The roving passes through the groove and eye to the drawingrolls. The groove, being eccentric to the eye and spindle., insures the twist, while the enlargement of the groove leaves the roving free to twist and be drawn between the eccentric groove or eye and the feedrolls, while, by slitting the rear end of the spindle, the prongs act as a spring to hold the spindle securely in the arbor.

In order to insure an even draw upon roving of the shortest ber, I arrange the eye f/ to revolve as closely as possible to the bite of the draw-rolls without touching them. The angle formed by the thread in passing from the groove to the central eyeV should be sufficiently square or acute to insure the uniform vtwist of the roving, while allowing it to pass freely through the groove and eye without breaking.

It is obvious that the speeds of the various parts ofthe mechanism may be varied absolutely or :relatively to each other to adapt them to the proper working of bers of different lengths and qualities. It is also obvious that the details ofthe mechanism may be varied in several ways without departing from thelspirit of my invention. For instance, in

Fig. 5 I have shown the central eye as formed by a hook, l, attached to an arbor, L, carrying a whirl or pulley, M, perforated eccentrieally. to receive a spindle, K, likewise eccentrically perforated, the arrangement being such that when the roving parts back of draw-rolls the spindle may be turnedd in the arbor until its perforated groove 7c coincides with the eye to thread or replace it more readily, and then be turned back again to give the proper angle to the rovingA to insure the drawing twist. A suitable stop prescribes thelimits of the revolution of the spindleK in its arbor.

In Fig. 6 another modiiication of my improvement is shown, to adapt it to spinning lwith a tube alone, instead of a spindle.v To dothis, I arrange a hook, c, on the inner side of the tube O on the end nearest the drawrolls, and place an eye, o', on a short pin, o2, projecting from the end of the tube, so as to bring the eye central and nea-r the bite of the draw-rolls. These modifications will produce precisely the same result as the device first described when arranged in the same relation to the drawing-rolls, but might be less convenient in spinning.

The operation is as follows: rIhe roving passes from the feed-rolls through the groove of the spindle to the eye, where it receives the proper drawing twist. and then into the drawrolls7 which reduce it to roving of proper size for the thread to bespun. From the drawrolls the roving passes through the traveler on the ring to the spool or bobbin on the spindle, receiving the proper final twist.

and the roving is conveyed to the bite of the draw-rollers from the center of the tube or spindle, substantially in the manner described. A2. The combination of. a removable twisting tube or spindle, constructed substantially as described, with a revolving tube driven by a whirl, substantially in the manner set forth. 3. The combination of a removable tube or spindle with the whirl tube and drawingrollers, when constructed, arranged, and operating substantially in the manner and for the purpose set forth.

In testimony whereof I-have hereunto subscribed my name.

(l. B. HOARD.

Witnesses:

J. I. PnY'roN, EDM. F. BROWN.` 

